The Orion SkyQuest XT8 is an 8” (actually 205mm or 8.1”) f/5.9 Newtonian reflector with a focal length of 1220mm, a fairly simple design. The primary mirror is made of plate glass.

Like most Newtonian reflectors, I need to align (called “collimating”) XT8’s mirrors fairly often, but not every single time I use the telescope. This is a relatively easy procedure and not something to be afraid of.

The tube of the XT8 is about 48” (1.2 m) long and, as such, fits across the back seat of most vehicles.

The focuser on the XT8 is a high-quality, single-speed 2” Crayford focuser. There is not a single plastic component to it.

I’ve noticed that the newest versions of the XT8 have added a brass compression ring to the focuser and its 1.25” adapter, an improvement over the older thumb screw design, which tended to leave marks on my eyepieces and accessories.

The 1.25” adapter also has T threads to attach a DSLR or mirrorless camera. But I don’t find this very useful given that the XT8 isn’t designed for long-exposure astrophotography and a smartphone is better for taking pictures of the Moon and planets.

The XT8 comes with a single eyepiece—a 25mm Plossl providing 48x magnification. I don’t see it as a bad eyepiece, but you’ll of course want additional eyepieces for higher and lower magnifications, particularly for good views of the Moon and planets.

A smartphone adapter for taking simple shots of the Moon and planets is also included, and it clamps onto most 1.25” eyepieces.

The XT8’s finderscope is a simple red dot sight. A finder like this would have been fine for a smaller telescope, but with a bigger scope like the SkyQuest XT8, I’d really like a reflex sight like the Telrad or a right-angle, correct-image magnifying finderscope—essentially a mini telescope itself—such as a 9×50 design.

The SkyQuest XT8 is a Dobsonian telescope that pivots up-down and left-right on Teflon pads. There are no locks, clutches, gears, or knobs to turn. I just push and pull the scope around the sky. Even at high magnifications, this is surprisingly easy for me to do, and the silky-smooth motions of the telescope make tracking and aiming the scope a breeze.

The regular XT8 uses springs for tensioning the altitude bearings, which allow the scope to pivot up and down. The telescope is prone to tipping over if it is slightly top- or bottom-heavy, due to the small bearings providing a smaller fulcrum and any imbalance making the whole tube act like a lever. This is actually quite helpful, but the springs look a little silly and are difficult to attach and remove.

My main gripe with the SkyQuest XT8’s mount, besides the small bearings, is the fact that it is made of particleboard. If I chip the paint/veneer, I will expose what is basically pressed-together sawdust, which quickly warps and rots. Also, particleboard is incredibly heavy, which is why the base of the Orion SkyQuest XT8 weighs a little over 20 lbs.

Thankfully, if the base is damaged or simply breaks your back, you can make a new base out of ¾” plywood for relatively little money, which will weigh less and probably look better, even with modest tools and skills. Several aftermarket vendors also offer custom new bases for your SkyQuest XT8, or indeed, any commercial Dobsonian telescope.

The XT8 has been around for 20 years, and not much has changed. Older XT8s have a slightly lower quality rack-and-pinion focuser, and the oldest units only have a 1.25” focuser, so expect to pay less for one of these.

But if the mirror coatings are in good shape and the base isn’t damaged, there’s not much that can go wrong with a used unit. At worst, you can always build a new base out of plywood for a relatively low cost.

The Orion SkyQuest XT8 doesn’t come with a lot of accessories or features for the money compared to “deluxe” Dobsonians, which hardly cost much more. Here are some of our top alternative picks:

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The XT8 shows me a lot, especially under clear and dark skies. However, no matter where I’m, the Moon and planets are fabulous.

The quality of many deep-sky objects I can view with the SkyQuest XT8 or any telescope, is heavily dependent on the light pollution I’m under.

Galaxies under dark skies look fabulous with the XT8; I have no trouble spotting the spiral arms of M51 and M33, the H-II regions of M82 and M101, and all sorts of dust lanes and details in several hundred of the brightest galaxies. But under light-polluted skies, the faint details and sometimes whole galaxies themselves completely vanish from view.

Many large, bright nebulae are similarly affected.

Open star clusters and globular star clusters, as well as smaller planetary nebulae, aren’t as affected by light pollution. Even from the suburbs, I’ve no trouble resolving many of the globular clusters like M13 and M15 into individual stars, and open star clusters are still majestic and colorful.